Advanced AJAX Page Loader loads page without reloading all
If my photo gallery is home page then wp-slimbox2 effect works. if i come then to different page and back to gallery- it doesnt work anymore but opens just jpg in browser.

I’ll have to look up exactly how Advanced AJAX Page Load works, but it likely has a section where you can tell it to run specific Javascript functions when it loads a page using AJAX, if that’s the case, tell it to run load_slimbox() with each call. That should fix the issue.

If it doesn’t, let me know and I’ll try and take a look at that plugin to see what needs to be done.